ATTINY1626-MU

Overview

The ATTINY1626-MU is an 8-bit microcontroller from the Microchip tinyAVR 2 family, utilizing the AVR CPU core with a hardware multiplier. It features 16 KB of Flash memory, 2 KB of SRAM, and 256 B of EEPROM. The device operates at a maximum clock frequency of 20 MHz within a supply voltage range of 1.8 V to 5.5 V. It is housed in a 20-pin VQFN package (3x3 mm) and supports an operating temperature range of -40°C to +85°C. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, and multiple timers.

Feature Summary

• Features a high-performance low-power AVR CPU running up to 20 MHz with single-cycle I/O access and a two-cycle hardware multiplier.
• Includes advanced analog capabilities such as a 12-bit differential ADC with Programmable Gain Amplifier (PGA) and up to 15 input channels.
• Supports flexible inter-peripheral signaling through an Event System and Configurable Custom Logic (CCL) with four programmable Look-Up Tables.
• Provides versatile communication interfaces including dual USARTs with auto-baud, Master/Slave SPI, and Master/Slave TWI supporting standard, fast, and fast plus modes.

Applications

• Low-power embedded sensor nodes requiring efficient data acquisition
• Industrial control systems needing robust peripheral integration
• Battery-operated devices utilizing extended sleep modes and low-voltage operation

Procurement Notes

Verify the specific ordering suffix 'MU' corresponds to the 20-pin VQFN package and the -40°C to +85°C temperature grade. Confirm that the component is the standard variant rather than the automotive VAO version unless explicitly required for AEC-Q100 compliance. Ensure compatibility with existing PCB footprints for the 3x3 mm VQFN form factor during procurement planning.

Selection Notes

Select this model when vertical migration within the tinyAVR 2 family is desired without code modification. It is suitable for designs requiring 18 general-purpose I/O pins and a 12-bit ADC with PGA. Consider this part over smaller variants if additional timer resources or communication channels are necessary while maintaining a compact footprint.

Part Context

This component belongs to the tinyAVR 2 family, which offers pin and feature compatibility across different flash sizes. The ATTINY1626 specifically provides a balance of memory capacity and I/O count in a 20-pin configuration. It shares architectural similarities with the ATtiny1624 and ATtiny1627, allowing for horizontal migration based on pin availability requirements.

Replacement Considerations

Compatible replacements include other members of the tinyAVR 2 family such as the ATtiny1624 or ATtiny1627, provided pin counts and peripheral requirements align. Ensure any substitute maintains the same package type and temperature rating for direct board replacement.